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Cant obtain IP adress from DHCP

Featured Replies

Hello,

I just purchased Dell R740 and wanted to move my Unraid From Dell  R620 to R740.

First issue I ran into was when I noticed that I couldn't boot in GUI mode.

I tried running regular OS mode and got the strange ip 169.254.0.2

When I boot the server without unraid running, server gets the ip adress assigned by DHCP just fine.

I tried booting in UEFI with no luck.

I created new USB just for testing and I keep getting same results.

Below is my current NIC card if this helps.

Dell 0CD2VM

Attached is also diagnostics zip.

Any help would be greatly appreciated!

newtower-diagnostics-20240416-1706.zip

  • Community Expert

Does it work if you use one of the onboard NICs instead of the USB NIC?

  • Author

@JorgeB That is the only NIC on this server. Only other network conection I have on the back is Idrac 9 enterprise card which also works fine from a server prospective.

  • Community Expert

The diags show 4 NICs besides the USB NIC, wrong diags?

 

1a:00.0 Ethernet controller [0200]: Intel Corporation Ethernet Controller X550 [8086:1563] (rev 01)
    DeviceName: NIC1
    Subsystem: Dell Ethernet 10G 4P X550/I350 rNDC [1028:1fa8]
    Kernel driver in use: ixgbe
    Kernel modules: ixgbe
1a:00.1 Ethernet controller [0200]: Intel Corporation Ethernet Controller X550 [8086:1563] (rev 01)
    DeviceName: NIC2
    Subsystem: Dell Ethernet 10G 4P X550/I350 rNDC [1028:1fa8]
    Kernel driver in use: ixgbe
    Kernel modules: ixgbe
1b:00.0 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
    DeviceName: NIC3
    Subsystem: Dell Gigabit 4P X550/I350 rNDC [1028:1faa]
    Kernel driver in use: igb
    Kernel modules: igb
1b:00.1 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
    DeviceName: NIC4
    Subsystem: Dell Gigabit 4P X550/I350 rNDC [1028:1faa]
    Kernel driver in use: igb
    Kernel modules: igb

 

  • Author

@JorgeB Its right Diagnostics, NIC card has 4 ports, 2 -10G and 2-1G.

Only other port is Idrac card.

I dont have any USB NICs if I understand this correctly.

  • Community Expert

Something weird is going on there, according to the diags, this is eth0:

 

Settings for eth0:

    Link detected: yes



driver: cdc_ether
version: 6.1.82-Unraid
firmware-version: CDC Ethernet Device
expansion-rom-version: 
bus-info: usb-0000:00:14.0-14.3


 

It's being reported as a USB NIC using a driver that has nothing to do with Intel NICs, try connecting the cable to the other gigabit NIC, that one is being identified correctly:

 

Settings for eth1:
    
    Link detected: no


driver: igb
version: 6.1.82-Unraid
firmware-version: 1.67, 0x800010ec, 22.5.7
expansion-rom-version: 
bus-info: 0000:1b:00.0


 

  • Author

@JorgeBHmmm, that is strange. I tried all other ports and still no problem.

I just checked the drivers and they are all up to date.

When I go to Bios and network after I remove Bootable Unraid flash drive.

Network shows all correct DHCP information including DNS/Gateway and I can go to Dell to pull drivers and check for updates.

It seems that something is up with Unraid trying to connect using this NIC.

  • Community Expert
15 minutes ago, Damir said:

I just checked the drivers and they are all up to date.

Not sure what you mean, the drivers are loaded by Unraid and cannot be updated.

 

Post new diags with the cable connected to the other gigabit NIC.

 

 

  • Author

@JorgeBSorry, I meant the server it self. If I boot the server without Unraid I can check all the specs in the Dell Life Cycle Controller and everything is up to date and works.

My guess what you are saying is that Unraid uses it's own drivers for that NIC and I guess that explains why it works when Unraid is not booted and doesn't when I try to boot Unraid.

I am not home now, I will send diagnostics when I get home using different port on my NIC card.

  • Community Expert
2 minutes ago, Damir said:

My guess what you are saying is that Unraid uses it's own drivers

Correct, other drivers won't matter.

 

The strange thing here, is that based on the diags, you have 5 NICs on the server, 1 USB NIC, 2 Intel gigabit NICs, 2 Intel 10GbE NICs, and the only one with a cable connected is the USB NIC, and you say there's no USB NIC...

 

But it should work if you use one of the Intel gigabit NICs, they are using the correct driver, but they don't have a link, or at least one is not detected.

  • Author

@JorgeB Attached is a picture of NIC Dell/Intel card installed in the server. Dell Idrac is only other card in the server so that one might be reading as usb which is strange as that port is not to be used for network in general. I am sure you are familiar with The Integrated Dell Remote Access Controller 9 (iDRAC9) which uses a separate ip for its own purposes. 

 

Screenshot_20240417_115608_Outlook.jpg

  • Community Expert
13 minutes ago, Damir said:

I am sure you are familiar with The Integrated Dell Remote Access Controller 9 (iDRAC9) which uses a separate ip for its own purposes.

I'm not, but I'm familiar with other IPMI implementations, from Supermicro for example, and those should don't interfere with the other NICs, main issue as I see it, it that no link is being detected on the Intel NICs, only on the "phantom" USB NIC.

  • Author

@JorgeB Yah, that is really strange, it has to be that Idrac port that is detecting as USB since there is no other ports that I see on the back.

I will just Disconnect Idrac network cable all together from the server and I will plug network cable in one of the 1g Ports that way I know for sure that only one network cable is connected to the server.

I will run diagnostics that way and see what happens. I can also disable idrac all together and see if that does anything. 

Thanks Jorge for all your help with this, I really appreciate.

  • Author

@JorgeBSo got this finally figured out.

In the Idrac Permission Setings, OS to Idrac pass through was enabled and thats where that USB NIC and ip was coming from. I disabled that option (don't really know what it does, but I don't think I need it). Everything seems to be working fine now, I can use any of the NIC ports for Unraid and Idrac dedicated port works fine as well.

 

20240417_215654.jpg

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